Hi Steven,
Ok, you're right. The problem is not due to the update from 1.4.0.1 to 1.4.0.2.

I can tell you what I have done:
I installed a separated Wordpress Publication on my server with the basic template set: http://luca.pelles.ch/wp2.

After that I installed the wp-juicebox-plugin Version: 1.4.0.1. When I want to Add a new juicebox-gallery e internal Server error appears:

http://www.pelles.ch/juicebox_ServerError.png

I think that i will embedd my galleries with a <iFrame>-Tag, because Juicebox-Galleries works fine outside of Wordpress
Link: http://www.pelles.ch/1476/

It's a pity.

Hi Steven
Thanks for your input. But it doesn't work. I have no bullet proof plugin.

This is the content of my .htaccess file:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Can you explain why it was working with version 1.4.0.1 and now it breaks with version 1.4.0.2?
cheers pat